.el-header {
    background-color: #0096dc;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
}

.el-aside {
    width: 100px;
    background-color: #fff;
    overflow: hidden;
    position: absolute;
    top: 60px;
    bottom: 0;
}

.el-main {
    background-color: #fff;
    position: absolute;
    left: 307px;
    right: 0;
    top: 60px;
    bottom: 0;
}

h1 {
    font-family: 楷体;
    margin-left: 50px;
    color: white;
}

h1>img{
    width: 50px;
    position: absolute;
    left: 20px;
    top: 10px;
}